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austriamicrosystems ag is now ams ag the technical content of this austriamicrosystems datasheet is still valid. contact information: headquarters: ams ag tobelbaderstrasse 30 8141 unterpremstaetten, austria tel: +43 (0) 3136 500 0 e - mail: ams_sales @ams.com please visit our website at www.ams.com
as1302 5v/30ma adaptive inductorless boost converter www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 1 - 18 datasheet 1 general description the as1302 is a 30ma inductorless boost converter using a double h-bridge charge-pump topology with two external flying capacitors. the as1302 charge pump features 1:2 and 2:3 operation modes as well as a 1:1 operation mode where the input is directly connected to the output. the as1302 runs on a 1.2mhz fixed frequency and is utilize d with a low noise regulation scheme to allow usage together with sensitive rf circuitry from the same battery supply. additionally to increase efficiency the as1302 switches to 49khz at light loads. designed to reside in portable and space limited equ ipment the 1.2mhz charge pump converts a 2.9v to 5.15v input to regulated 5v output with 3% accuracy. the shutdown function reduces the supply current to <1 a and disconnects the load from the output. the integrated soft-start circuitry prevents high inrush currents being drawn from the battery during start-up. the as1302 includes built-in under-voltage lockout, sh ort circuit-, and thermal protection circuitry. the as1302 is av ailable in tdfn (3x3x0.8mm) 10-pin and an extremely small 1.2x1.2mm wl-csp 8-bumps package with 0.4mm pitch. 2 key features up to 90% efficiency 2.9v to 5.15v input voltage regulated 5v output automatic mode switching <1a shutdown current startup with full load (within 1ms) up to 30ma load current short circuit protection output disconnected during shutdown soft-start no inductor required small external components required (c out =2.2f, c fly =220nf) low noise fixed frequency (1.2mhz, 49khz) charge pump: - 1:1 battery feed through mode - 2:3 single phase mode - 1:2 single phase mode package options: - tdfn (3x3x0.8mm) 10-pin - wl-csp 8-bumps with 0.4mm pitch 3 applications the device is ideal for two or three aa cells or a single li-ion battery cell to 5v conversion, mobile phones, portable instruments, mi croprocessor based systems and remote data-a cquisition systems . figure 1. as1302 - typical application diagram v batt c bat as1302 2.2f vbatt en gnd vout c1+ c1- c2+ c2- v out = 5v c out 2.2f on off c fly1 c fly2 2.9v to 5.15v 220nf 220nf ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 2 - 18 as1302 datasheet - pin assignments 4 pin assignments figure 2. pin assignments (through view) pin descriptions table 1. pin descriptions pin name pin number description c1- a1 connector 1-. negative terminal of flying cap 1. gnd a2 ground. en a3 enable. (op erating if en = 1). set this digital input to logic high for normal operation. for shutdown, set to logic low. c1+ b1 connector 1+. positive terminal of flying cap 1. vbatt b3 +2.9v to 5.15v input voltage. byp ass this pin to gnd with a 2.2f low esr ceramic capacitor. vout c1 +5v output voltage. this pin must be bypassed with a 2.2f low esr ceramic capacitor. c2+ c2 connector 2+. positive terminal of flying cap 2. c2- c3 connector 2-. negative terminal of flying cap 2. a3 b3 c3 a1 b1 c1 en vbatt c1- c1+ vout c2 c2+ a2 gnd c2- 1 gnd as1302 2 c1- 3 nc 4 c1+ 5 vout 10 en 9 vbatt 8 c2- 7 nc 6 c2+ gnd tdfn (3x3x0.8mm) 10-pin wl-csp 8-bumps ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 3 - 18 as1302 datasheet - absolute maximum ratings 5 absolute maximum ratings stresses beyond those listed in table 2 may cause permanent damage to the device. these are stress ratings only, and functional operation of the devi ce at these or any other cond itions beyond those indicated in section 6 electrical characteristics on page 4 is not implied. exposure to absolute maxi mu m rating conditions for extended periods may affect device reliability. table 2. absolute maximum ratings parameter min max units notes all pins to gnd -0.3 +7.0 v operating temperature range -40 +85 oc storage temperature range -65 +125 oc esd 2k v hbm mil-std. 883e 3015.7 methods 500 v cdm jesd22-c101c methods package body temperature +260 oc the reflow peak soldering temperature (body temperature) specified is in accordance with ipc/jedec j-std- 020d ?moisture/reflow sensitivity classification for non-hermetic solid state surface mount devices?. the lead finish for pb-free leaded packages is matte tin (100% sn). ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 4 - 18 as1302 datasheet - electrical characteristics 6 electrical characteristics v batt = 2.9v to 5.15v, v out = 5v, c out = c bat = 2.2f, c fly1 = c fly2 =220nf, t amb = -40 to +85oc. typical values are at t amb = +25oc and v in = 3.3v, unless otherwise specified. table 3. electrical characteristics symbol parameter conditions min typ max units v batt(on) undervoltage lockout rising v batt 2.8 2.9 v v batt(off) undervoltage lockout falling v batt 2.4 2.5 2.8 v v batt battery supply voltage 2.9 5.15 v v out output voltage accurracy i out = 0ma, 15ma 4.85 5.0 5.15 v v o / i o11 load regulation in 1:1 mode v batt = 5.4v, i out = 10~30ma 2 mv/ma v o / i o23 load regulation in 2:3 mode v batt = 4.3v, i out = 10~30ma 3 v o / i o12 load regulation in 1:2 mode v batt = 3.3v, i out = 10~30ma 3 v tgr11/23 mode switching voltage 1:1 / 2:3 mode, falling v batt 5.1 v v tgr23/12 2:3 / 1:2 mode, falling v batt 3.6 mode switching voltage hysteresis 150 mv i out load current 1 1. the device is tested in a proprietary test mode. 30 ma v ripple output voltage ripple v batt = 3.6v, i out = 30ma 22 mv pp v batt = 3.6v, i out = 2ma 40 mv pp i inr inrush current 2 2. the inrush current is limited by the internal soft-start circuitry. note: all limits are guaranteed. the parameters with min and max values are guaranteed with production tests or sqc (statistical quality control) methods. 150 ma i short short-circuit current 150 ma 12 efficiency in switching mode 1:2 mode, v batt = 2.9v, i out = 30ma 85 % 23 2:3 mode, v batt = 3.8v, i out = 30ma 85 % i op12 operating quiescent current v batt = 3.4v (1:2 mode without load) 240 300 a i op23 v batt = 4.5v (2:3 mode without load) 170 230 i op11 v batt = 5.3v (1:1 mode without load) 100 150 i off shutdown current en = 0v 0.01 1 a input levels v ih input high level pin en 1.1 5.5 v v il input low level 0.0 0.4 v timing f osc oscillator frequency v batt = 3.6v, i out = 30ma 0.9 1.2 1.5 mhz v batt = 3.6v, i out = 2ma 40 49 65 khz t start startup time 0.5 1 ms thermal regulation t off temperature shutdown temperature rising 145 oc hysteresis 10 ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 5 - 18 as1302 datasheet - typical operating characteristics 7 typical operating characteristics v batt = 3.3v, v out = 5v, c out = c bat = 2.2f, c fly1 = c fly2 =220nf, t amb = +25oc, unless ot herwise specified. figure 3. efficiency vs. input voltage; i load = 1ma figure 4. efficiency vs. input voltage; i load = 10ma 0 10 20 30 40 50 60 70 80 90 100 2.6 3 3.4 3.8 4.2 4.6 5 5.4 input voltage (v) efficiency (%) 1:2 mode 2:3 mode 1:1 mode 0 10 20 30 40 50 60 70 80 90 100 2.6 3 3.4 3.8 4.2 4.6 5 5.4 input voltage (v) efficiency (%) 1:2 mode 2:3 mode 1:1 mode figure 5. efficiency vs. input voltage; i load = 20ma figure 6. efficiency vs. input voltage; i load = 30m a 0 10 20 30 40 50 60 70 80 90 100 2.6 3 3.4 3.8 4.2 4.6 5 5.4 input voltage (v) efficiency (%) 1:2 mode 2:3 mode 1:1 mode 0 10 20 30 40 50 60 70 80 90 100 2.6 3 3.4 3.8 4.2 4.6 5 5.4 input voltage (v) efficiency (%) 1:2 mode 2:3 mode 1:1 mode figure 7. quiescent current vs. input voltage figure 8. quiescent current vs. temperature 50 75 100 125 150 175 200 225 250 275 300 2.4 2.9 3.4 3.9 4.4 4.9 5.4 input voltage (v) quiescent current (a) 50 75 100 125 150 175 200 225 250 275 300 -45 -30 -15 0 15 30 45 60 75 90 temperature (c) quiescent current (a) vi n=3. 4v (1: 2 mode) vi n=4. 5v (2: 3 mode) vi n=5. 3v (1: 1 mode) ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 6 - 18 as1302 datasheet - typical operating characteristics figure 9. efficiency vs. output current; v batt = 2.9v figure 10. efficiency vs. output current; v batt = 3.3v 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 output current (m a) efficiency (%) 1.2mhz 49khz 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 output current (m a) efficiency (%) 1.2mhz 49khz figure 11. efficiency vs. output current; v batt = 3.6v figure 12. effici ency vs. output current; v batt = 4v 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 output current (m a) efficiency (%) 1.2mhz 49khz 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 output current (ma) efficiency (%) 1.2mhz 49khz figure 13. efficiency vs. output current; v batt = 4.3v figure 14. effici ency vs. output current; v batt = 5.4v 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 output current (ma) efficiency (%) 1.2mhz 49khz 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 output current (ma) efficiency (%) permanent 1:1 mode ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 7 - 18 as1302 datasheet - typical operating characteristics figure 15. output voltage vs. output current figure 16. output voltage vs. output current 4.85 4.9 4.95 5 5.05 5.1 5.15 0.01 0.1 1 10 100 output current (ma) output voltage (v) vi n = 2. 9v vi n = 3. 3v vi n = 4. 3v 1.2mhz 49khz 4.85 4.9 4.95 5 5.05 5.1 5.15 0.01 0.1 1 10 100 output current (ma) output voltage (v) vi n = 3. 0v vi n = 3. 6v vi n = 4. 0v 1.2mhz 49khz figure 17. output voltage vs. input voltage fig ure 18. output voltage vs. temperature 4.85 4.9 4.95 5 5.05 5.1 5.15 2.9 3.2 3.5 3.8 4.1 4.4 4.7 5 5.3 input voltage (v) output voltage (v) i out = 4ma i out = 10ma i out = 20ma i out = 30ma 1:2 mode 2:3 mode 1:1 mode 4.85 4.9 4.95 5 5.05 5.1 5.15 -45 -30 -15 0 15 30 45 60 75 90 temperature (c) output voltage (v) i out = 0. 1ma i out = 10ma i out = 30ma figure 19. startup time vs. input voltage; load=166 0 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1 2.9 3.15 3.4 3.65 3.9 4.15 4.4 4.65 4.9 input voltage (v) startup time (ms) ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 8 - 18 as1302 datasheet - typical operating characteristics figure 20. turn-on / turn-off time @ load = 166 figure 21. inrush current; no load 200s/div v out 2v/div 1v/div en 50s/div v out i inr 2v/div 50ma/div 2v/div en figure 22. switching frequency vs. input voltage; i out = 2ma figure 23. switching frequency vs. input voltage; i out = 20ma 40 45 50 55 60 65 2.9 3.2 3.5 3.8 4.1 4.4 4.7 5 input voltage (v) switching frequency (khz) 0.9 1 1.1 1.2 1.3 1.4 1.5 2.9 3.2 3.5 3.8 4.1 4.4 4.7 5 input voltage (v) switching frequency (mhz ) figure 24. switching frequency vs. temperature; i out = 2ma figure 25. switching frequency vs. temperature; i out = 20ma 40 45 50 55 60 65 -45 -30 -15 0 15 30 45 60 75 90 temperature (c) switching frequency (khz) 0.9 1 1.1 1.2 1.3 1.4 1.5 -45 -30 -15 0 15 30 45 60 75 90 temperature (c) switching frequency (mhz ) ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 9 - 18 as1302 datasheet - typical operating characteristics figure 26. load transient; mode = 1:1, i out = 30 to 10 to 30 ma figure 27. load transient; mode = 2:3, i out = 30 to 10 to 30 ma 500s/div v out i out 50mv/div 10ma 30ma 500s/div v out i out 50mv/div 10ma 30ma figure 28. load transient; mode = 1:2, i out = 30 to 10 to 30 ma figure 29. load transient; mode = 1:2, i out = 20 to 4 to 20 ma 500s/div v out i out 50mv/div 10ma 30ma 500s/div v out i out 4ma 50mv/div 20ma figure 30. line transient figure 31. output ripple 5ms/div v in 3.8v 5mv/div 4.8v v out 10s/div c2- v out 1v/div 20mv/div - bw=20mhz ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 10 - 18 as1302 datasheet - detailed description 8 detailed description functional description the as1302 is a high efficiency and low noise switched capa citor dc-dc converter that is capable of boost operation. it is equipped with two built-in coupled h-bridge type switch configurations. based on the value of the output voltage the system automatically initia tes mode-switching to achiev e the highest possible efficienc y. the regulation of the output voltage is achieved by a regulation loop, which modula tes the current drive capability of the power transistors so that the amount of charge transferred from the input to the output at each clock cycle is controlled and is equal to the charge needed by the load. regulation loop the as1302 operates at a constant frequency. for the regulation loop power transistors, a resistor divider and an error amplifier are used to keep the output voltage within the allowed limits. the error amplifier takes the feedback and reference signals as inputs and generates the error voltage signal. the error voltage controls a driver that triggers the gate voltage of the power transistor which modulates the cu rrent drive capability of the po wer amplifier. the modulated transistor controls the charge transferred from the input to the output and therefore the regulation of the output is realized. this regulation concept which is based on adjustin g the amount of charge transferred, delivers the smallest voltage ripple possible. figure 32. as1302 - functional block diagram light/heavy load monitor to detetect the output current in the 2:3 and in the 1:2 mode, a current sense is used. the device switches to a lower switching frequency (49khz typ), due to a detected light-load condition. with this frequency an excellent light-load efficiency is achieved and no audible noise is generated. if the load is increasing (typically more than 3ma), the device operates at 1.2mhz. + vbatt c bat vout c out c1+ c1- c2+ c2- en c fly1 c fly2 double-h bridge topology vmode v ctrl ref por te m p state machine & control logic mode select gnd clk as1302 on off bias it () td soft- start ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 11 - 18 as1302 datasheet - detailed description switch configuration the as1302 has nine built-in power switches in the shape of two coupled h-bridge topologies. the system features 1:2 and 2:3 operation modes as well as a 1:1 operation where the input is directly connected to the output. in 2:3 operation mode two flying capacitors are placed in series and each capacitor is charged to the half of the input vol tage. in pumping phase the flying capacitors are placed in parallel. the bottom-plates of the parallel flying capacitors c fly 1 and c fly 2 are connected to the input voltage so that the voltage at the top-plates of the flying capacitors is boosted to a voltage equal to v batt + v batt /2. by connecting the top-plates of the capacitors to the output, the output voltage in the 2:3 mode can be up to one and a half of v batt . if the top-plate voltage is higher than 5v, the regulation loop adapts the power transistor?s on-resistance to drop some voltage. in 1:2 operation both flying capacitors are placed in parallel to the input voltage, and therefore charged to the input vol tage. during pumping phase the input voltage is connected to the bottom of the charged flying capacitors. the voltage at the top-plates of the parallel capacitors is now boosted to 2v batt . by connecting the top-plates of the capacitors to the output, the output can be charged to twice the voltage of v batt . if the top-plate voltage is higher than 5v the regulation loop limits the charge transfer to the output. figure 33. 2:3 operating mode v batt +2.9v to 5.15v sw1 c fly1 c fly2 sw3 sw2 sw4 charging phase v out +5v v batt +2.9v to 5.15v sw1 c fly1 c fly2 sw3 sw2 sw4 pumping phase v out +5v figure 34. 1:2 operating mode v batt +2.9v to 5.15v sw1 c fly1 c fly2 sw3 sw2 sw4 v out +5v charging phase v batt +2.9v to 5.15v sw1 c fly1 c fly2 sw3 sw2 sw4 pumping phase v out +5v ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 12 - 18 as1302 datasheet - detailed description soft-start the soft-start circuit prevents the supply from high inrush currents caused by the converter?s power-up sequence. during the soft-start (0.5ms typ) the device limits the inrush current. the device is capable to power-up at the minimum specified battery voltage and with the maximum load (ohmic equivalent) applied to the output. undervoltage lockout, uvlo the as1302 is equipped with an undervoltage lockout functionality. if the battery voltage drops below 2.5v (typ) the device enters the undervoltage lockout condition. the device remains in this condition until the battery voltage is high enough to enter the soft start sequence. an internal hyster esis of 300mv prevents ringing during startup. if the input voltage increases to 2.8v (typ) again after such a condition the device turns-on automatically. shutdown mode the as1302 enters low-power shutdown mode when en is set to logic low. in shutdown the charge-pump action is halted, the output is completely disconnected from the input and v out will drop to 0v. note: for a stable operation trigger at least a rising edge on the en pin to set the internal settings of the device after vbatt power-up. short-circuit protection short-circuit protection prevents damage to the device if th e output is shorted to ground. whenever the output voltage is pulled significantly below v batt , short-circuit protection is triggered and limits the current. as soon as v out recovers the protection is released and the device enters soft-start mode. thermal shutdown the as1302 offers thermal shutdown, which prevents damage due to an over-temperature condition. thermal shutdown will be initiated if the junction temperature exceeds 145c. if the temperature drops below this value, the thermal shutdown will be released automatically and the devi ce resumes operation. a hysteresis prevents the thermal shutdown from oscillating. efficiency consideration in the 2:3 operation mode the input current of the charge pum p is approximately 1.5x the load current. in an ideal charge pump the efficiency can be calculated by: the same works for the 1:2 operation mode. the input current of the charge pump is approximately 2x the load curren t. the efficiency of a charge pump in 1:2 operation mode can be calculated by: for typical and high output power conditions the quiescent current and the switching losses are negligible and (eq 1) and (eq 2) are valid. hence, with the same input voltage the 2:3 operation mode will result into a higher efficiency than the 1:2 operation mode. (eq 1) p out p in ------------- v out i out v batt 15 i out , ------------------------------------------- v out 15 v , batt ------------------------ - == = (eq 2) p out p in ------------- v out i out v batt 2 i out ------------------------------------- v out 2 v batt ------------------ - == = ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 13 - 18 as1302 datasheet - application information 9 application information external component selection the high internal oscillator frequency of 1.2mhz permits the use of small capacitors for both, the flying capacitors and the output capacitors. for any given load the value of the flying- and output capacitors as well as their esr are affecting the output voltage performance. in general, the capacitor?s esr is inversely proportional to its physical size. larger capacitances and higher voltage rat ings tend to reduce esr. the esr is a function of the frequency too, so it must be rated at the devices operating frequency. another factor affecting capacitor esr is temperature. note: many capacitors have a huge capacity variation over temperature. this can be compensated by choosing a capacitor with a better thermal coefficient or by choosing a larger nominal value to ensure proper operation over temperature. it is not critical which type of input bypass capacitor c bat and output filter capacitor c out is used, but it will affect the performance of the charge pump. low esr capacitors should be used to minimize v out ripple. multi-layer ceramic capacitors are recommended since they have extremely low esr and are available in small footprints. input capacitor a 2.2f input bypass low esr capacitor such as tantalum or ceramic is recommended to reduce noise and supply transients. during startup and mode change it supplies a part of the peak input current drawn by the device. output capacitor the output capacitor is charged to v out during the pumping phase. the esr of the output capacitor introduces spikes in the output voltage waveform whenever the charge pump charges c out . these spikes contribute to the ripple volt - age of v out . therefore, ceramic or tantalum low esr capacitors are recommended for c out to minimize the output voltage ripple. table 4. recommended input and output capacitors part number c tc code rated voltage dimensions manufacturer grm188r61c225ke15 2.2f x5r 16v 0603 murata www.murata.com grm21br71e225ka73 2.2f x7r 25v 0805 grm188r60j475ke19 4.7f x5r 6.3v 0603 grm188r60j106me47 10f x5r 6.3v 0603 figure 35. load regulation comparision with different capacitors figure 36. output ripple vs. output current comparision with different capacitors 4.85 4.9 4.95 5 5.05 5.1 5.15 0 5 10 15 20 25 30 load current (ma) output voltage (v) 2. 2f 16v 0603 2. 2f 25v 0805 4. 7f 6. 3v 0603 10f 6. 3v 0603 0 20 40 60 80 100 0 5 10 15 20 25 30 load current (ma) output ripple (mv) 2. 2f 16v 0603 2. 2f 25v 0805 4. 7f 6. 3v 0603 10f 6. 3v 0603 1.2mhz 49khz ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 14 - 18 as1302 datasheet - application information flying capacitor selection to ensure the required output current and avoid high peak currents the values of the flying capacitors c fly 1 and c fly 2 are very critical. a 220nf capacitor is sufficient for most applications. dependent on the operation mode the as1302 alternately charges and discharges the c fly 1/2 . while the esr of the output capacitor produces a part of the output voltage ripple, the esr of the flying capacitors directly adds to the charge pump?s output source resistance. therefore low esr capacitors, e.g. tantalum or ceramic, are recommended for the flying capacitors as well. due to different materials for ceramic capacitors the on the material depending temperature and voltage coefficients ha ve to be considered. the capacitance of a x7r ceramic capacitor is more stable than a z5u or y5v ceramic capacitor over the whole temperature range from -40c to +85c. as an additional effect a z5u or y5v ceramic capacitor will loose about the half of his nominal ca pacitance when the rated voltage is applied. it is important to choose the ceramic capacitor according to the minimum available capacitance over the operating vol tage and the bias voltage. this information is stated in the datasheets of the capacitor manufacturer. layout consideration to achieve the best performance of the as1302 a careful board layout is necessary to reduce the impact of the high switching frequency and the high transient currents which ar e produced by the device. for a proper regulation under all conditions a true ground plane and short connections to all external capacitors are needed. table 5. recommended flying capacitors part number c tc code rated voltage dimensions manufacturer grm188r71e224ka88 220nf x7r 25v 0603 murata www.murata.com grm155r61a224ke19 220nf x5r 10v 0402 ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 15 - 18 as1302 datasheet - package drawings and markings 10 package drawings and markings the device is available in a tdfn (3x3x0.8mm) 10-pin and wl-csp 8-bumps package. figure 37. tdfn (3x3x0 .8mm) 10-pin package diagram note: 1. figure 37 is shown for illustration only. 2. n is the total number of terminals. 3. all dimensions are in millimeters, angle is in degrees. 4. dimensioning and tolerancing conform to asme y14.5m-1994 . table 6. tdfn (3x3x0.8 mm) 10-pin package dimensions symbol min typ max symbol min typ max a 0.70 0.75 0.80 d bsc 3.00 a1 0.00 0.02 0.05 e bsc 3.00 a3 0.20 ref d2 2.20 2.70 l1 0.03 0.15 e2 1.40 1.75 l2 0.13 l 0.30 0.40 0.50 aaa 0.15 0o bbb 0.10 k 0.20 ccc 0.10 b 0.18 0.25 0.30 ddd 0.05 e 0.50 eee 0.08 n 10 ggg 0.10 nd 5 see detail b pin 1 index area (d/2 xe/2) btm view n-1 n b bb ddd d2 d2/2 b (d/2 xe/2) 2x 2x top view aaa c aaa c e pin 1 index area d ccc c a side view (nd-1) x e e 0.08 c a1 a b l c a b c e2 e2/2 seating plane a3 k c detail b datum a or b terminal tip e odd terminal side ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 16 - 18 as1302 datasheet - package drawings and markings figure 38. wl-csp 8-bumps package diagram 1 2 1 0 2 0 . 0 0 1 2 1 0 2 0 . 0 0 4 0 0 4 0 t y p . 2 0 0 t y p . 6 0 0 3 0 3 5 0 t y p . 2 7 0 1 0 n o t e s : c c c c o p l a n a r i t y a l l d i m e n s i o n s i n m 2 0 m c c c t o p t h r o u g h v i e w b o t t o m v i e w b a l l s i d e 2 0 2 0 5 2 0 2 0 5 2 0 ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 17 - 18 as1302 datasheet - ordering information 11 ordering information the device is available as the standard products shown in table 7 . note: all products are rohs compliant and pb-free. buy our products or get free samples online at icdirect: http://www.austriamicr osystems.com /icdirect for further information and requests, please contact us mailto:sales@austriamicrosystems.com or find your local distributor at http://www.a ustriamicrosystem s.com/distributor table 7. ordering information ordering code marking description delivery form package as1302-bwlt asq7 5v/30ma adaptive inductorless boost co nverter tape and reel wl-csp 8-bumps AS1302-BTDT asq7 5v/30ma adaptive inductorless boost co nverter tape and reel tdfn (3x3x0.8mm) 10-p in ams ag technical content still valid
www.austriamicrosystems.com/dc-dc_step-up/as1302 revision 1.03 18 - 18 as1302 datasheet copyrights copyright ? 1997-201 0, austriamicrosystems ag, tobelbaderstrasse 30, 8141 unterpremstaet ten, austria-europe. trademarks registered ?. all rights reserved. the mate rial herein may not be reproduced, adapted, merged, translated, stored, or used without the prio r written consent of the copyright owner. all products and companies mentioned are trademarks or reg istered trademarks of their respective companies. disclaimer devices sold by austriamicrosystems ag are covered by t he warranty and patent indemni fication provisions appearing in its term of sale. austriamicrosystems ag makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems ag reserves the right to change specifications and prices at any time and without notice. therefore, prior to designing this pro duct into a system, it is necessary to check with austriam icrosystems ag for current information. this product is intended for use in normal commercial applications. applications requiring extended temperature range, unusual environ mental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specif ically not recommended without additional processing by austriamicrosystems ag for each application. for shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. the information furnished here by austriamicrosystems ag is bel ieved to be correct and accurate. however, austriamicrosystems ag shall not be liable to recipient or any third party for any damages, including but not limited to pe rsonal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the tech - nical data herein. no obligation or liability to recipient or any third party shall arise or flow out of austriam icrosystems ag rendering of technical or other services. contact information headquarters austriamicrosystems ag tobelbaderstrasse 30 a-8141 unterpremstaetten, austria tel: +43 (0) 3136 500 0 fax: +43 (0) 3136 525 01 for sales offices, distributors and representatives, please visit: http://www.austriamicrosystems.com/contact ams ag technical content still valid

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